Welcome to LookChem.com Sign In|Join Free

CAS

  • or
4-hydroxyproline is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

913000-57-4

Post Buying Request

913000-57-4 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

913000-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 913000-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,3,0,0 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 913000-57:
(8*9)+(7*1)+(6*3)+(5*0)+(4*0)+(3*0)+(2*5)+(1*7)=114
114 % 10 = 4
So 913000-57-4 is a valid CAS Registry Number.

913000-57-4Relevant articles and documents

Enzymatic synthesis of cyclic amino acids by N-methyl-l-amino acid dehydrogenase from Pseudomonas putida

Yasuda, Mari,Ueda, Makoto,Muramatsu, Hisashi,Mihara, Hisaaki,Esaki, Nobuyoshi

, p. 1775 - 1779 (2006)

A new enzymatic system for the synthesis of enantiomerically pure cyclic amino acids (CAA) from the corresponding diamino acids or racemic CAA is described. α,ω-Diamino acids were oxidized to α-keto acids with amino acid oxidases (AAO). The α-keto acids were spontaneously transformed into cyclic imino acids in the reaction medium. The resulting imines were reduced to the l-form CAA with N-methyl-l-amino acid dehydrogenase (NMAADH) from Pseudomonas putida ATCC12633 using NADPH as a cofactor. l-Form CAA were also obtained from racemic CAA using d-amino-acid oxidase and NMAADH. Using this method, a new compound [1,4]-thiazepane-3-carboxylic acid (Fig. 1) was synthesized from aminopropylcystein.

Peptide Tyrosinase Activators

-

, (2015/06/10)

Peptides that increase melanin synthesis are provided. These peptides include pentapeptides YSSWY, YRSRK, and their variants. The peptides may activate the enzymatic activity of tyrosinase to increase melanin synthesis. The pharmaceutical, cosmetic, and other compositions including the peptides are also provided. The methods of increasing melanin production in epidermis of a subject are provided where the methods include administering compositions comprising an amount of one or more peptides effective to increase the melanin production. The methods also include treating vitiligo or other hypopigmentation disorders with compositions including one or more peptides.

PROCESS FOR PRODUCING SOLID AMINO ACID

-

Paragraph 0055, (2014/12/09)

The problem to be solved by the present invention is to ea lily and efficiently produce an amino acid having 2 to 7 carbon atoms as a high-purity solid without complicated operation, which is useful as a synthetic intermediate for medicines or agrochemicals. The present invention is characterized in comprising a step of precipitating solid amino acid with high purity. In the present invention, the by-produced salt composed of the sulfonic acid and the amine was removed to the mother liquor by reacting an amine with a sulfonic acid salt of amino acid in an aprotic polar solvent, or by reacting a sulfonic acid with an amine salt of amino acid in an aprotic polar solvent. The sulfonic acid salt of amino acid, for example, may be produced by reacting a N-(tert-butoxycarbonyl) amino acid with a sulfonic acid, or by reacting an amino acid tert-butyl ester with a sulfonic acid.

Substrate specificity and stereoselectivity of two Sulfolobus 2-keto-3-deoxygluconate aldolases towards azido-substituted aldehydes

Schurink, Marloes,Wolterink-Van Loo, Suzanne,Van Der Oost, John,Sonke, Theo,Franssen, Maurice C. R.

, p. 1073 - 1081 (2014/05/06)

The 2-keto-3-deoxygluconate aldolases (KDGAs) isolated from Sulfolobus species convert pyruvate and glyceraldehyde reversibly into 2-keto-3-deoxygluconate and -galactonate. As a result of their high thermostability and activity on nonphosphorylated substrates, KDGA enzymes have potential as biocatalysts for the production of building blocks for fine chemical and pharmaceutical applications. Up to now, wild-type enzymes have only shown moderate stereocontrol for their natural reaction. However, if a set of azido-functionalized aldehydes were applied as alternative acceptors in the reaction with pyruvate, the stereoselectivity was strongly increased to give enantiomeric or diastereomeric excess values up to 97 %. The Sulfolobus acidocaldarius KDGA displayed a higher stereoselectivity than Sulfolobus solfataricus KDGA for all tested reactions. The azido-containing products are useful chiral intermediates in the synthesis of nitrogen heterocycles. Taming the wild-type: Two 2-keto-3-deoxygluconate aldolases from Sulfolobus species readily couple azido-substituted aldehydes to pyruvate in a stereoselective manner. The resulting compounds yield chiral nitrogen heterocycles upon reduction.

Amine compounds and combinatorial libraries comprising same

-

, (2008/06/13)

The present invention provides monocyclic, bicyclic and oligomeric amine compounds with at least two sites of diversity. These compounds are formed from monocyclic scaffolds which can be cyclized to form bicyclic amine scaffolds. These can then be reacted with building blocks to form the amine compounds of the invention. This invention further provides libraries or monocyclic, bicyclic and oligomeric amine compounds. Also provided are methods for preparing monocyclic, bicyclic and oligomeric amine compounds and libraries thereof. The present invention also provides pharmaceutical compositions of the monocyclic, bicyclic and oligomeric amine compounds.

Process for producing trans-4-hydroxy-L-proline

-

, (2008/06/13)

An industrially applicable process for producing trans-4-hydroxy-L-proline, which is useful as a raw material for medicines or as an additive to foods. In the process, L-proline is converted into trans-4-hydroxy-L-proline in the presence of an enzyme source which is derived from a microorganism belonging to the genus Dactylosporangium, Amycolatopsis or Streptomyces and which catalyzes the hydroxylation of L-proline into trans-4-hydroxy-L-proline, a divalent iron ion and 2-ketoglutaric acid, in an aqueous medium, and the produced trans-4-hydroxy-L-proline is collected from the aqueous medium. Also provided is a novel enzyme L-proline-4-hydroxylase which is useful for the process, a gene of L-proline-4-hydroxylase which is useful for the process, a transformant containing the gene, and a process for producing L-proline-4-hydroxylase using the transformant. In addition, provided is a process for producing L-proline-4-hydroxylase using the transformant which contains the gene and has a reinforced proline biosynthesis activity.

Spiro[pyrrolidine-2,3'-oxindole] compounds and methods of use

-

, (2008/06/13)

The invention provides spiro[pyrrolidine-2,3'-oxindole] compounds produced by the stereo- and regio-selective reaction of variously substituted isatins, alpha -amino acids, and dipolarophiles (e.g., trans-chalcones, acrylate esters, or vinyl oxindoles).

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 913000-57-4